Catline apparatus for hoists



June 29, 1943. A. R. MAIER CATLINE APBARATUS FOR HOISTS [noe/zio x 406057 f6.

Patented June 29, 1943 UNITED `S'llfX'I'lS PATENT OFF] CE 1 t 2,323,095 n GATLINE APPARATUS Foa Hoisrs AugustR. Maier, Oil City,` Pa., assigner to Oil Well Supply Company Jersey a corporationy of New` Application MaylS, 1941, Serial No. 393,272 4 claims. (C1. 25A- 176) lines are used, one for spinning the drillpipe as when making up joints, and a secondior auX- iliary hoisting purposes, each selectively operable from a single cathead.

` In the first instance, the spinning rope extends laterally from the cathead around the drillers position at one side of the hoist to the drill pipe at the Well, and in the second instance, a line extends from said cathead in an upward direction through a pulley or guide above the drillers position over the crown block of the derrick and thence downwardly to attachment with the work to be hoisted thereby, Due to the fact that both catlines must necessarily pass in close proximity to the drillers vposition at the hoist,

they are a source of continuous hazard tothe a catline apparatus for a well drilling hoist which may be positioned in protective relation to the driller and in proper power-receiving relation to the cathead, which may also be disposed within the overall width of the hoist on which it is mounted, thereby insuring proper road clearance for a hoist otherwise within the legal limits prescribed therefor.

Further objects are to provide apparatus of the character stated which is readily applicable to existing hoists; to provide for the selective adjustment thereof in relation to the drillers position and the hoist; and to provide a positive and safe guard for the protection of the driller.

Additional objects and advantages will become apparent from the following description taken in connection with the accompanying drawing,

drilling hoist of well known construction, in-

cluding a skid frame 2 upon opposite sides of which an upright frame 3 is supported for mount- -inner terminals, as at ing a drumshaft 4 and a line shaft 5. A jack shaft 6 is mounted on the skid frame and receives the applied power by a belt'drive I from `a suitable engine, and by means of chain drives, the power is transmitted between said shafts in the conventional manner, said engine and chain drivesbeing omitted as the same are well known and are not apart of the present invention.

A rotary 8 isk diagrammat'ically shown in Fig. 1 in positional relation to the hoist to clearly illustrate the location of the catlines with which the present invention is. concerned, said `rotary having its table 9 centered in the usual derrick over the hole or well.

In the drilling. operation, it is frequently desirable to spin the drill pipe sections at the rotary, as by means of a spinning rope or catline I0 powered `by a removable cathead II mounted on `and driven by the lineshaft 5 at one side of the hoist, generally that side of the hoist at which the driller stands, the drillers position being indicated by the circle X in Fig. 1. .y

For the purpose of guiding said catline about and protecting the driller, I provide a vertical roller I2 rotatably mounted in a pair of adjustable brackets I3 extending outwardly from the 4upright frame 3 on the drillersside of the hoist. Suitable horizontal bearing plates or members liars-welded orbolted to saidframe'for mounting the roller brackets.

Thebrackets I3 are bolted outwardly' of their I5, to their" respective bearing plates I4, thereby providing a pivotal mounting for the brackets and roller for horizontal swingingV movement thereof in relation to the hoist, Each bearing plate I 4 is provided with a series of bolt holes I6 for selectively securing the inner terminals of the brackets by bolts I'I upon pivotal movement of the brackets about the bolts I5, thereby securing the roller in adjusted position.

Hence, the roller may be swung outwardly from the hoist side to position the same in operative relation to the cathead II secured to the line shaft, and in such position receive and guide the catline III about the driller without hazard to him during the operation of said catline.

Since a hoist of the character illustrated may be of substantial width, difficulty has been encountered by the use of former catline equipment, due t0 its projection beyond the hoist and beyond permissible road clearance, Equipment of the character described must be transported from one drilling site to another and must conform to the legal road clearance during such transportation.

I have mounted my improved catline guard roller in such a manner that it may be swung inwardly toward the hoist body as shown in dotted lines in Fig. 1, by pivotal movement thereof about the bolts I5, whereby the roller and its brackets lie inwardly of the side clearance plane a-a defined by other parts of the hoist. The

pivot bolts I are located well within the road' clearance limit of the hoist structure, and the width of the brackets I3 outwardly beyond saidk bolts is restricted to dispose the brackets within said limit or plane when moved inwardly toward the hoist body.

As a further feature of my catline apparatus, I provide a sheave I8 removably mounted upon the upper roller bracket I3 for receiving a second catline I9 from the cathead II for auxiliary hoisting purposes, said catline extending upwardly as to the crown block of the derrick. By locating the sheave It! on said bracket, the said sheave is automatically disposed in operative relation to the cathead II when the roller I2 is positioned for operation, and dueto the upper bracket I3 being elevated from the ground and above the level of the line shaft, the sheave serves to conne the catline I9 so as not to interfere withor endanger the driller, said line passing upwardly from said sheave into the derrick above the drillers head.

Various modifications are contemplated Within 1,the scope of the following claims.

I claim:

1. In a, Well drilling hoist having a supporting frame and including a projecting shaft, a cathead mounted on said shaft and projecting from the drillers side of the hoist, said cathead being readily `removable from the shaft to provide road clearance, a catline guard disposed adjacent the drillers position including a vertical roller, means pivotally mounting said roller on the frame for horizontal swinging adjustment thereof, and means for securing the roller and its mounting" in extended position in operative relation'to the cathead, said mounting being proportioned and with the roller being movable to lie in retracted position within the outermost extent ofthe shaft for said cathead.

2. In a well drilling hoist having a supporting frame and including a projecting shaft, a cathead mounted on said shaft and projecting from thedrillers side of the hoist, said cathead being readily removable from the shaft to provide road clearance, a cathead guard adjustably mounted v on said side of the frame between the cathead and the drillers position, said guard including a pair of vertically spaced brackets, a vertical roller supported therebetween, said brackets being pivotally secured to the frame for horizontal swinging movement for selectively positioning the roller in relation to the cathead and the drillers position, and means for securing the brackets in adjusted position, said brackets being proportioned and with said roller being movable to lie in retracted position Within the outermost extent of the shaft for said cathead.

3. In a well drilling hoist having a supporting frame and including a projecting shaft, a cathead mounted on said shaft and projecting from the drillers side of the hoist, said cathead being readily removable from the shaft to provide road clearance, a catline guard adjustably mounted on said side of the frame between the cathead and the drillers position, said guard including a pair of vertically spaced brackets, a vertical roller supported therebetween, said brackets being vertically pivoted inwardly of the outermost part of the said cathad shaft, said brackets being so proportioned and with the roller being movable on said pivotal mounting into retracted position within the outermost extent of said shaft, or into extended position therebeyond to position the roller in relation to the cathead and drillers position, and means for securing the brackets in adjusted position.

4. In a well drilling hoist having a supporting frame and including a projecting shaft, a cathead mounted on said shaft and projecting from the drillers side of the hoist, said cathead being readily removable-from the shaft to provide road clearance, a catline guard disposed adjacent the drillers position including a vertical roller, a pair of vertically spaced brackets pivotally mounting said roller on the frame for horizontal swinging adjustment thereof, means for securing the brackets with the roller in extended position in operative relation to the cathead, said brackets being proportioned and with the roller being movable to lie in retracted position within the outermost extent of the shaft for said cathead, and a sheave mounted on the upper bracket disposed to be positioned in operative relation to the cathead when the brackets and roller are in extended position.

AUGUST R. MAIER. 

